Revert "mmc: driver's changes from kernel msm-4.14 to msm-4.19"

This reverts commit 4f50c26c.

This change is reverting as this commit have only SDCard changes,
and to add eMMC change, SDCard and eMMC should come together.
So reverting this change to add both eMMC and SDCard porting changes
in subsequent dependent change.

Change-Id: I450c8585b0c8e8af087475880a12425e5de4d1a0
Signed-off-by: Ram Prakash Gupta <rampraka@codeaurora.org>